EP0719466A1 - Brush holder - Google Patents
Brush holderInfo
- Publication number
- EP0719466A1 EP0719466A1 EP94927544A EP94927544A EP0719466A1 EP 0719466 A1 EP0719466 A1 EP 0719466A1 EP 94927544 A EP94927544 A EP 94927544A EP 94927544 A EP94927544 A EP 94927544A EP 0719466 A1 EP0719466 A1 EP 0719466A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- brush
- box
- brush box
- receptacle
- feature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 244000185238 Lophostemon confertus Species 0.000 claims abstract description 58
- 238000003825 pressing Methods 0.000 claims abstract description 4
- 239000002184 metal Substances 0.000 claims description 7
- 230000007704 transition Effects 0.000 claims 1
- 230000002411 adverse Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000005489 elastic deformation Effects 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R39/00—Rotary current collectors, distributors or interrupters
- H01R39/02—Details for dynamo electric machines
- H01R39/38—Brush holders
Definitions
- the invention relates to a brush holder according to claim 1.
- Such brush holders are provided in particular for use in low-noise commutator motor drives in which the brush holders holding and guiding the brush boxes are held as firmly as possible to a large mass of the motor in order to minimize operational vibration accelerations to be coupled as a brush box holder with the interposition of a plastic insulating support.
- the brush boxes which are usually formed from metal as a stamped and bent part and are therefore subject to tolerances, are accommodated by an enclosing cavity of the plastic carrier, fine machining processes to compensate for the fit with excessive tolerances are usually necessary before final assembly. If the plastic carriers are in two parts In such a way that the brush boxes can first be inserted into a semi-mold and then pressed tightly against the counterpart of a second closing carrier part, there is a risk of inadmissible deformation of the brush boxes with excessive tolerances.
- FIG. 1 shows a cross section through an elastically deformable brush box according to the invention with a brush guided therein
- FIG. 2 shows the receptacle for the brush box according to FIG. 1 in a plastic brush box holder fastened to a bearing plate
- FIG. 3 shows the brush box according to FIG. 1 before its press fit deformation
- FIG. 4 3 after a press fit deformation
- FIG. 5 the brush box according to FIG. 1 with additionally molded fixing hooks for positive locking in the brush box holder
- 6 shows the longitudinal top view of a brush box according to
- 1, 7 shows an alternative embodiment of a brush box to FIG.
- FIG. 1 shows in cross section a brush box 2 according to the invention, in which an essentially rectangular brush 3 is held in a guided manner.
- the brush box is punched out of sheet metal and is rolled into a closed box, the longitudinal edges of which lie in front of one another in the area of the transverse side faces 3.4 of the brush 3 and are preferably interlocked with one another by dovetail-like connections.
- the brush box 2 preferably in the area of the longitudinal side surfaces 3.1, -3.2 of the brush, is spaced apart from the pressure surface shoulders 2.5, -2.6 in such a way that the brush box 2, when pressed into a receptacle 1.1, is preferably a plastic carrier and on the end plate 4 of a collector motor attachable brush plate 1 in the area of their pressure surfaces 1.11, -1.12 can be fixed in the press fit with elastic deformation .; for this purpose, the pressure surface shoulders 2.5, 2.6 of the brush box 2 are shaped with a corresponding oversize a relative to the width of the receptacle 1.1 of the brush plate 1.
- the size of the pressing force is essentially determined by the oversize a of the fit and the section modulus of the sheet metal cross section of the brush box 2, for its elastic deformability according to an embodiment of the invention above and below the pressure surface heels 2.5; 2.6 elastic heels 2.1- 2.4 are provided in the opposite side surfaces of the brush box 2.
- the elastic paragraphs 2.1-2.4 are particularly simple in terms of production technology in the manufacture of the brush box 2 due to weak points in the form of punched-out openings 2.7 according to FIG. 6 or punched-in notches 2.8 reached according to FIG 7; the punched out or punched-in weak points are preferably in the area between the pressure surface paragraphs 2.5; 2.6 on the one hand and the rest, in particular for guiding the longitudinal side surfaces 3.1; 3.2 of the brush 3 serving part of the brush box 2; in the area of the narrower transverse side surfaces 3.3; 3.4, the brush box 2 lies essentially over the entire surface with guide play.
- a spring characteristic of the receptacle 1.1 of the brush plate 1 can be dispensed with and this can thus be made rigid.
- the receptacle 1.1 is preferably U-shaped with a bearing plate L in the axial direction of the motor and thus essentially perpendicular to the bearing plate L receiving the brush plate 1, such that the brush box 2 is similar in the case of an axial superstructure assembly, which can preferably be accomplished by manipulators like the other motor components to be assembled, can be fed in the axial direction and fixed in the receptacle 1.1.
- fixing hooks 2.9 can be punched and laterally bent on the spaced-apart longitudinal sides of the brush box 2, as shown in FIGS. 5, 6, which hooks 2 are pressed when the brush box 2 is pressed into the receptacle 1.1 snap into corresponding fixing openings 1.2 of the brush plate 1.
Landscapes
- Motor Or Generator Current Collectors (AREA)
- Motor Or Generator Frames (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP94927544A EP0719466B1 (en) | 1993-09-15 | 1994-09-02 | Brush holder |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP93114882 | 1993-09-15 | ||
EP93114882 | 1993-09-15 | ||
PCT/EP1994/002923 WO1995008205A1 (en) | 1993-09-15 | 1994-09-02 | Brush holder |
EP94927544A EP0719466B1 (en) | 1993-09-15 | 1994-09-02 | Brush holder |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0719466A1 true EP0719466A1 (en) | 1996-07-03 |
EP0719466B1 EP0719466B1 (en) | 1997-01-29 |
Family
ID=8213270
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94927544A Expired - Lifetime EP0719466B1 (en) | 1993-09-15 | 1994-09-02 | Brush holder |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0719466B1 (en) |
CZ (1) | CZ285974B6 (en) |
DE (1) | DE59401737D1 (en) |
SK (1) | SK282560B6 (en) |
TR (1) | TR28171A (en) |
WO (1) | WO1995008205A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10054537A1 (en) * | 2000-11-03 | 2002-06-06 | Hoffmann & Co Elektrokohle Ag | Brush arrangement for electric motors |
DE10248992A1 (en) * | 2002-10-21 | 2004-04-29 | BSH Bosch und Siemens Hausgeräte GmbH | Method and device for producing a brush arrangement |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE902881C (en) * | 1938-11-20 | 1954-01-28 | Siemens Ag | Brush guide with pressed fabric cover |
DE3220877A1 (en) * | 1982-06-03 | 1983-12-08 | Vorwerk & Co Interholding Gmbh, 5600 Wuppertal | BRUSH HOLDER ON ELECTRIC MOTORS EQUIPPED WITH EMISSION CONTROLLER, IN PARTICULAR FOR HOUSEHOLD APPLIANCES LIKE VACUUM CLEANERS OR THE LIKE |
DD277567A1 (en) * | 1988-11-30 | 1990-04-04 | Elektrogeraete Ingbuero Veb | ARRANGEMENT FOR THE PRODUCTION OF ELECTRICAL CONNECTIONS IN A SMALL POWER ELECTRIC MOTOR |
-
1994
- 1994-07-26 TR TR00730/94A patent/TR28171A/en unknown
- 1994-09-02 WO PCT/EP1994/002923 patent/WO1995008205A1/en active IP Right Grant
- 1994-09-02 DE DE59401737T patent/DE59401737D1/en not_active Expired - Fee Related
- 1994-09-02 CZ CZ96720A patent/CZ285974B6/en not_active IP Right Cessation
- 1994-09-02 EP EP94927544A patent/EP0719466B1/en not_active Expired - Lifetime
- 1994-09-02 SK SK350-96A patent/SK282560B6/en unknown
Non-Patent Citations (1)
Title |
---|
See references of WO9508205A1 * |
Also Published As
Publication number | Publication date |
---|---|
TR28171A (en) | 1996-02-29 |
CZ285974B6 (en) | 1999-12-15 |
SK35096A3 (en) | 1997-02-05 |
WO1995008205A1 (en) | 1995-03-23 |
EP0719466B1 (en) | 1997-01-29 |
DE59401737D1 (en) | 1997-03-13 |
SK282560B6 (en) | 2002-10-08 |
CZ72096A3 (en) | 1996-06-12 |
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Legal Events
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